archiving task, importing

Sir,
In my place of work, buisness activities close by 31 march and so do my all incomplete tasks should also get finished.

my question is, if i want to archive all tasks complete and incomplete by on 31st march and wanna start fresh toodledo task as 0 task from april-1 . is that possible . and also i want to download all above archived task in excel and keep them safe.

There is no way to do this automatically, but it shouldn't be too hard to do a review on the 31st and clean things up by completing incomplete tasks and then using our CSV export option to put this into Excel. You'll need a Pro account to view the full month of archived history, but otherwise it is doable.